Electric installation fixture



y I. R. SELTZER ELECTRIC INSTALLATION FIXTURE Filed June 12. 1919 Fatented May 13, 1924.

, ifi.. PATENT GFFICE.

IEA B. SELTZER, .01? WATERBURY, CONNECTICUT, ASSIGNOB TO'THEy GOBCDQN ELEC- TRIO MFG. CO., OF WATEBVILLE, CONNECTICUT.

y I ELECTRIC INSTALLATION IIXTURE.

Application tiled Innen, 191.9. Serial No. 303,565.

To all whom t may concern:

Be it known that I, IRA R. SELTZER, a citizen of the United States, residing at Waterbur in the county ci' New Haven and State of onnecticut, have invented a new and useful Improvement in Electric Installation f Fixtures; and I do hereby declare the following, when taken in connection with the accompanying drawings and the characters off reference marked thereon, to be a full, clear, and exact description of the same, and which said drawings constitute part 'of this application, and represent, iii- Fig. 1 a front view of a screw-plug flushreceptacle embodying my invention.

Fig. 2 an end View of the insulating body thereof, as it appears when stripped.

Fig. 3 back view oi" the complete `tixture as shown in Fig. i.

Fig. 4 a sectional view of the insulating body on the line 4.--4 of Fig. 3, the body being shown stripped, as also slmwn in Fig. 3.

F ig. 5 a View of the fixture in central longitudinal section ony the line 5`5` of` broken sectional View on the line Fig. 8 a detached plan View ofthe screwshell with the arms thereof bent at right angles to its axis. 4

Fig. 9 a view `of the shell in side elevation `prior to the bending of the arms.

Fig. 10 a broken sectional view onthe line 10-10 of Fig. 1.

My invention relates to an improvement in electric installation fixtures such as receptacles, sockets, outputs and the like, the object being to reduce 'the cost and number of parts of articles of this character, as well as to improve their etliciency and appearance.

With these ends in View, my invention consists in certain details of construction and combinations of parts as will be hereinafter described and pointed out in the claim;

For the purpose of illustrating my invention, I have shown it as applied to what 1s known as a screw-plug flush-receptacle, but it is equally applicable to other forms of electric installation tixtu'res, such as sockets, cut-outs and the like. As herein shown, I employ a metal screw-shell 11 having a pair of integral complementary assembling arms 1 2, 12, formed upon its lower edge at points opposite each other. The shell is also formed with an integral current-carrying armV 13 which is longer than thearms 12, 12, aforesaid, and located midway between vthe same and constitutes one of the salient features of my present invention. The said shell is located in a circular chamber 14 formedl in and entering the front face of the molded insu- .I

lating bod 15 of the fixture, the said body being ma e of porcelain or other suitable material. In the bottom edge of the circular chamber 14 I form two oppositely located complementary passages 16, 16, for the respective assembling-arms 12, 12, and with ai passage 17 for the current-carrying arm 13 which is bent outward 'at a right angle into a recess 18 formed in the back of the body 15 as shown in Fig. 7 and extending laterally outward with respect to the axis of the chamber 14. lThe outer end of the saidarm 13 is formed with' a hole for a current-carrying screw 19 extending forward througlra screw hole'20fi1`1' ythe body 15 and screwed into a terminal 21 located in a recess 22 in one cornerr of the front of the body 15,1the said terminal which 'is thus held inplace, being furnished with a binding screw 2?) for the reception of a current-carrying wirepnot shown. Under the construction just described, the current-carrying arm 13 is made to take the lace of the several connecting segments or inarily employed for carrying the current from the screw-shell to the terminal in question.

The passages 16, 16, aforesaid lead into recesses 24 in the back of the body 15 as shown in Figs. 3 and 6, the ends of the assembling-arms 12, 12, being bent outward 6, whereby the grip of the said arms upon the body 15 is made stronger.

To facilitate the assembling operation, the

entrance to the passages 16, 16, and 17 are 'flanked by assembling or guiding lugs 27 as .shown in- Figs. 6 and 7, the outer faces of these lugs merging into` assembling or guiding inclines 2""a which tend to bend the arms 12, 12, and 13 outward as the shell is crowded home inthe chamber 14. This construction facilitates the assembling operation, since otherwise the ends of the re? spective arms must be accurately positioned with respect to theseveral passages before the shell can be shoved home.

The shell current, as it' is commonly called, is carried as already described, by the current-carrying arm 13, the screw 19,

i and the terminal 23. The center current,

so called, is provided for in the usual manner 4by a center contact strip 28 extending radially into the bottom of the chamber 14 .and resting upon a slight elevation 29 therein. The outer end of the said strip passes outward through a lateral opening in the bottom of the chamber 14 into a recess 31 in the back of the body 15. A currentcarrying screw 32 passing through the outer end of the strip 28 and through a hole 33 in the body 15, carries the center current to a terminal 34 in a recess 35 in the front of the body 15, this being a common construction. The body 15 is furnished at its ends 'with fastening brackets 36 secured in place by screws 37.

While I have shown my invention as applied to a screw-plug flush-receptacle, it is apparent that sockets, cnt-outs or the like in the same manner have their screwshe 1s provided with integral current-carrying arms corresponding to the arm 13 and used forthe same purpose. It is also apparent that 'kindred electric installation fixtures may have the floors of the recesses `formed in their insulating bodies for the reception of the assembling-arms of their shells inclined to permit the arms to be bent at more than a'right angle for strengthening their grip, and that the passages into such recesses vmay .be flanked with assembling-lugs leading to inclines, the construction and the functions of these features remaining the same irrespective of the parlticular luse of the fixture.

clined with respect to the said recesses; ot'

a screwshell located in the said chamber and having at its inner end assembling arms and a current-carrying arm respectively entered into the said recesses through the said passages and deflected outwardly bythe said lugs; a current-carrying screwlocated in a hole in the said body; and a terminallocated in the front face of the said body and lconnecting* the said terminal with the current-carrying arm of the shell.

In testimony whereof, I have signed this specification in the presence of two subscribing witnesses.

IRA R. SELTZER.

Witnesses: y

HILDA RosINA BRooKs, ALBERT H. Pos'r. 

